Effects of overweight and obesity on walking characteristics in adolescents

超重 百分位 体质指数 肥胖 步态 人体测量学 人口 最佳步行速度 人口学 医学 物理疗法 心理学 物理医学与康复 数学 统计 社会学 病理 内科学
作者
Janet S. Dufek,Rayland L. Currie,Philana-Lee Gouws,Lori Candela,Antonio P. Gutierrez,John A. Mercer,LeAnn G. Putney
出处
期刊:Human Movement Science [Elsevier BV]
卷期号:31 (4): 897-906 被引量:48
标识
DOI:10.1016/j.humov.2011.10.003
摘要

Child and adolescent obesity is growing at a staggering rate. Associated potential health risks have been acknowledged in the adult population, and similar concerns have been raised for children and adolescents. However, distinguishing locomotor characteristics related to obesity have yet to be clearly identified for adolescents. The aims of the study were to examine the effects of walking velocity and gender on spatio-temporal characteristics of gait between normal weight (NW) and overweight and obese (OWO) adolescents. In addition, we sought to identify characteristics of gait that are related to body mass index percentile (BMI%). Adolescent students in grades 7–10 (N = 111) from a charter school participated in the study. All participants walked at two speeds (preferred, fast) over an instrumented walkway (120 Hz). Spatio-temporal characteristics of gait were extracted from four walkway passes and evaluated. Results identified significant (p < .05) differences in velocity, percent double support, percent swing phase, and stance width between groups. Only stance width was different (p < .05) between genders. Models to predict BMI% from kinematic walking parameters were of moderate strength (averaging 43.5% explained variance) and were generally stronger for females versus males. Percent double support was the primary predictor variable of BMI% across speed and gender. It is suggested that OWO adolescents may be challenged with control of movement of the center of mass during the support phase of walking.

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